Scilab Function
Last update : 13/1/2005

h_inf_st - static `H_infinity` problem

### Calling Sequence

  `[Kopt,gamaopt]=h_inf_stat(D,r)`

### Parameters

- `D`: real matrix
- `r`: 1x2 vector
- `Kopt`: matrix

### Description

computes a matrix `Kopt` such that largest singular value of:

`lft(D,r,K)=D11+D12* K*inv(I-D22*K)* D21` is minimal (Static `H_infinity` four blocks problem).

D is partionned as `D=[D11 D12; D21 D22]` where `size(D22)=r=[r1 r2]`

### Author

F.D. ;